I have had my 30,000 gallon in ground pool now for about 9 months. We used the pool just last weekend and it was fine - woke up Tuesday and it was really green. I live in Texas and its been 101 and sunny for 2 weeks strait. I shocked the pool like I have before and the next morning it was still green and when brushing some of the green algae is not coming off. I had a pool service come out and they recommended draining!! It was fine last weekend! I went to Leslies and they suggested to not drain it, all my levels were fine in the water test except low chlorine count. They then sold my algaecide and told me to shock the pool, wait 2 hours, then add the algeacide. It definitely had a good effect - pool is much less green, water is pretty clear, but there are still some algae spots.
Can I repeat the process and get rid of the rest?
How often do you need to drain your pool - the service guy said around every 4 years.
My filter keeps hitteing high PSI and I backwash and add more DE - is this normal with this extreme weather (like I said, weeks of 101 degrees and sunny)?
Feeling exasperated - keep getting different info from everyone.
I am using Leslies shock and copper algaecide.